exapand using identity.1.(2a+3b+c)square .2.(x-6)square.3.(x+1/x)(x-1/x)
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1.(2a+3b+c)square
=(2a) square+(3b) square+(c) square+2(2a)(3b)+2(3b)(c) +2(c)(2a)
=4a square+9b square+c square+12ab+6bc+
4ac
2. x-6 square
= (x) square+(-6) square -2(x)(6)
=x square+36-12x
=(2a) square+(3b) square+(c) square+2(2a)(3b)+2(3b)(c) +2(c)(2a)
=4a square+9b square+c square+12ab+6bc+
4ac
2. x-6 square
= (x) square+(-6) square -2(x)(6)
=x square+36-12x
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